Change for Sunricher SR-ZG9040A/ZG9041A-D also affects ZG9101SAC-HP-Switch

[Gnarfoz]

Hi, this change seems aimed at SR-ZG9040A/ZG9041A-D but it also affects https://www.zigbee2mqtt.io/devices/ZG9101SAC-HP-Switch.html.
The external switch attribute shows up, but I don't think that's configurable on these devices?
The PWM thing doesn't show up. The switch is not a dimmer, anyway.

Should this be cleaned up or can someone confirm this was intentional and works for these devices?

Originally posted by @Gnarfoz in #8210 (comment)

[github-actions]

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